1. Institute of Molecular Vascular Medicine, Klinikum rechts der Isar, Technical University Munich, Germany (L.M.).
2. Department of Medicine, Karolinska Institutet and University Hospital, Stockholm, Sweden (L.M.).
3. German Centre for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Germany (L.M.).
4. Department of Physiology, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, the Netherlands (R.A.B.).
5. Amsterdam Cardiovascular Sciences, Microcirculation, the Netherlands (R.A.B.).
6. Institute for Cardiovascular Regeneration, Centre for Molecular Medicine, Goethe University Frankfurt am Main, Germany (R.A.B., S.D.).
7. German Centre for Cardiovascular Research (DZHK), Partner Site Frankfurt Rhein/Main, Germany (R.A.B., S.D.).